Fluid-pressure motor.



A. DEv GEOFROY.

FLUID "PRESSURE MOTOR.

APPLIOATION FILED MAR. 18, 1912.

1,057,233. I Patented Mar.25,1913.

A. DE GEOFROY.

FLUID PRESSURE MOTOR.

APPLICATION FILED MAR.1B. 1912 1 057 233 v Patented 'Mar. 25, 1913.

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9' Wm mp- 1 Ti l H U 1 I WM I! I W l I I i A. DE GEOPROY.

FLUID PRESSURE MOTOR. APPLICATION FILED MAR.18. 1912' Patented Mar. 25, 1913.

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tion of the drum will ANTOINE DE GEOFROY, OF PARIS, FRANCE.

rnum-rnnssunn Moron.

Specification of. Letters Patent.

- Patented Mar. 25,1 913.

Application filed March 18, 1912. Serial No. 684,418.

To all whom it may concern:

Be'it known that I, ANTOINE on GEoFnoY, a citizen of the Republic of France, residing at Paris, France, have invented new and useful Improvements in Fluid-Pressure Motors, of which the following is a specification. 1

My invention relates to a motor designed to be operated by any moving fluid,- and consists in the features and combinations hereinafter described and more specifically pointed out in the claims.

In the accompanying drawings,- Figure 1 is a perspective view of an upper part of my invention. Fig. 2 is a transverse section on a line which may be at the longitudinal.

center of the motor, and Fig. 3 is a vertical elevation mainly in section. Fig. 4 shows a modification, and Fig. 5 a diagram hereinafter described.

I provide a drum 1 of wood, iron or other suitable material adapted to revolve upon a vertical axis or shaft 2. The drum is furnished at its periphery with a continu-- one series ofwhat ma be termed S-shape-d curves formed prefera 1y 'so that a cross secbebounded by segments of circles of unequal radii and tangential at their points of meeting. The center from which each smaller segment is described is on the line of the outer circumference of the drum, said se ent beginning thereon and being continue inward a little beyond one quarter of its full circle to a point at which it becomes one with or is lost in the curvature of its adjacent larger segment. The center of this larger segment is at such point. that the curve at its startingpoint is made tangential to theouter circumference of the drum] and at its other end to the meeting end of the smaller segment, the respective curvatures of the two segments unitlng. The most desirable roortions between the respective radii o the -shaped curves, as well as the most effective nuinber of curves or depressions on the eare to be etermined by circumstances, the conditions under which the motor is to be used, and the motive fluid employed. The curved or indented erimeter of the drum constitutes a series 0 vanes, blades or buckets upon which the fluid acts, and the preferred dispositionof the radii of the segments entering into El e Sshaped curve is shown in the diagram Mounted to rotate on the axis 2, but independently of the movement of the drum 1, are disks 3, 4, one above the other, the disks being separated a distance practically equal -to theextremelength of the drum. The I disks 3 and 4 are connected by a shield 5 in the form of a segment of about one sixth or one fourth of the perimeter of the disks. The object of this segmental shield is to rotect the non-workin surface of the drum rom the retarding action of the fluid and to allow the active surface or the exposed blades, vanes or buckets to produce maximum effect. On the top of the upper disk 3 is a vertically disposed vane 6 theobject of which by rotating the connected disks is to keepthe shield 5; in such position as toprevent the wind from striking non-operative surfaces of the drum. At a right angle 76 to the vane 6 are devices for causing it to deflect slightly from the direction of maximum, efliclency in case the wind or othermotive force should come toostrongly for the motor. The said devices include two 80 metallic plates 7, one placed at each side of the vane 6. These plates ban from a transverse rod .8 (passi throug the vane 6) to which they are rlgidly secured,- the rod being-journaled in posts Sand 10. The position of the lates 7 is'controlled by the force of the ffiiid' acting upon them. One of these lates has behind it a curved plate 11 shaped as a hollow quarter-cylinder and which, as the confronting plate 7 is moved eo is turned up presenting a curved surface to the force ofthe wind, thus destroying the-balance of the apparatus and causing the required, deflection. The plates 7v are balanced by means of the weighted arms 12 secured to the rod 8.

I do not limit my invention-to the utilization'of wind power alone. The drum may becaused to rotate by the impact of currents part of a steam or water turbine inclosed in a fixed casing with apertures for the ingress and egress of either of the above named In Fig. 4 I show the drum l'made of metal and caused to be Watertight, immersed as in the ocean at a point near the land, and adapted to be-rotated by the movement of the water. The perimeter of the drum is formed in the manner hereinbefore de-' v parts as may be required to transmit powe to the machinery to be driven.

It will be seen that the working surface -,of the drum is constituted of what may be termed a series of blades each so shaped that it shall receive the unobstructed and full impact of the wind, and at the proper time admit of the free delivery thereof from contact with it. This is permitted by reason of the fact that, as shown for example in Fig. 2, the perimeter of the drum has a series of corresponding formations each constructed of two curves, one being ofgreater radius than the other and so united that when the drum has reached, or is about to pass, the horizontal center line, the "wind unobstructedly' does its work and thereafter is at once relieved from contact with the drum. withoutflretarding efiect thereon.

, the peculiar formation There is no reaction ofthe fluid upon the drum, this being in great measure prevented by the presence of the shield 5. As seen,

the curves. of the shorter radius meet those of the longer radius without the intervention of anything in the nature of a lip, projection or other element obstructive to the free delivery of the wind at such intersection. The outer end of'the shorter curve intersects the outer end of the curve of greater.

radius at,'or nearly at, a right angle. These features are of the highest importance.

The shield 5 serves the pur 'ose of steadying and preventing a retar ation of the drum in its rotation by reaction or other cause. The shield should be asclose as practicable to the perimeter of the drum. The shield is calculated to act in connection with 'ven-to the perimeter of the drum. T is calculation includes not only the extent, width and: location of the shield, but also its roximity to the perimeter of the drum, and it coaction with the perimeter of the latter consequent upon the rotation of the disks 3 and 4 which effect the movement of the shield, but are independent of the movement of the drum. The disks 3 and 4 coact not only with the shield but also with the vane 6 and the drum whereby the action of the wind upon the exposed surface of the perimeter of the drum 1s suitably regulated. It will thus be seen that each element of the whole device is constructed, arranged and specially designed to coact with its fellow elements.

The device if used as a water motor will not require the movable shield and regulator described as applied to a wind motor and which, while there not indispensable, increase its efliciency and regularity of action. Furthermore, the drum may be caused to revolve horizontally or vertically under the action of falling water to generate electricity, drive machinery, etc.

It will be understood that in all uses of my invention as herein shown the drum is secured to the shaft so as to cause the rotation of the latter as a power transmitting medium for uses in the various arts.

I claim I 1. In a fluid pressure motor, a rotatable drum the perimeter of which is furnished with a series of longitudinal S-shaped curves formed of segments of circles of unequal radii and tangential at their points of meeting and intersecting at their outer ends substantially at a right angle, combined with a suitably supported axis or shaft with which the drum rotates, a disk axially mounted at each end of said drum, and a segmental shield connecting said disks and conforming in shape to their perimeter and confronting certain of the S-shaped curves of the drum, said disks and the shield rotating on the axis independently of the shaft and drum, substantially as set forth.

2. In a fluid pressure motor, a rotatable drum the perimeter of which is furnished and confronting certatin of the S-shaped curves formed of segments of circles of unequal radii and tangential at their points of meeting and intersectin, at their outer ends substantially at a rig t angle, combined with a suitably supported axis or shaft with which the drum rotates, a disk axially mounted at each end of said drum, a segmental shield connecting said disks and conforming in shape to the perimeter thereof and confronting certain of the S-shaped curves of the drum, said disks and shield rotating'on the axis or shaft independently of the shaft and drum, and a verticall disposed vane rigid with the upper die for eeping the shield in position to protect.the non-operative surface of the drum, substantially as set forth. 0

3. In a fluid pressure motor, a tight rotatable drum the perimeter of which is furnished with a series of longitudinal I shaped curves formed'of segments of circles of unequal radii and tangential at their points of meeting and intersecting at their outer ends substantially at aright angle, combined with a power transmitting shaft to which the drum is secured, and suitable supports in which the shaft is adapted'to revolve, substantially as set forth.

In testimony whereof I aifix my signaturein presence of two witnesses.

ANTOINE 13E GEOFROY.

Witnesses:

' C. B. BULL,

CHARLES LOWELL HOWARD. I 

